The Properties of High-Performance Concrete with Manganese Slag under Salt Action DOI Open Access
Junchao Yang, Hui Wang, Ling Peng

et al.

Materials, Journal Year: 2024, Volume and Issue: 17(7), P. 1483 - 1483

Published: March 25, 2024

Manganese slag (MS) containing a certain amount of active hydration substances may be used as kind cementitious material. In the present study, we measured mass, relative dynamic modulus elasticity (RDME), and flexural compressive strengths MS high-performance concrete (MS-HPC) with added basalt fibers exposed to NaCl freeze-thaw cycles (N-FCs), dry-wet alternations (N-DAs), Na2SO4 (NS-DAs). Scanning electron microscope energy-dispersive spectrometer (SEM-EDS) spectra, thermogravimetric analysis (TG) curves, X-ray diffraction spectroscopy (XRD) curves were obtained. The mass ratio ranged from 0% 40%. volume varied 2%. We found that, result salt action, loss rate (MLR) exhibited linear functions which inversely correlated fibers. After MLR increased by rates 0~56.3%, but this increase was attenuated addition Corresponding increases in RDME function positively ratios range 0~55.1%. also led decreased attenuation mechanical strength, while levels flocculent products elements Mn, Mg, Fe. CaClOH CaSO4 crystals observed XRD after N-DA NS-DA actions, respectively. Finally, resulted variation TG values. However, opposite obtained when actions exerted.

Language: Английский

Experimental Study on Deep-Drawing Dies Made of Pre-Stressed UHPC DOI Open Access
Katja Holzer, Y. Zhang, Lukas Martinitz

et al.

Materials, Journal Year: 2025, Volume and Issue: 18(2), P. 277 - 277

Published: Jan. 9, 2025

Deep drawing is a cost-efficient way of producing sheet metal parts in high production volumes. Prototypes and very small series are expensive due to the cost steel-forming tools. Ultra-high-performance concrete (UHPC) tools offer cheap fast alternative conventional However, flexural tensile strength UHPC limits its use complex loading situations occurring forming die during deep drawing. To overcome this challenge, we propose pre-stressing by using expansive mechanically restrained condition. An aluminum powder-based agent can be used induce free volume increase specimens. With push-out test specimens, was tested when restraining with steel reinforcement. After 3 12 months, no notable pre-straining effect could measured expansion UHPC. Nonetheless, deep-drawing experiments, made condition withstood maximal load 110 kN. Compared from only, failure mode changed complete fracture surface degradation radius after 15 strokes.

Language: Английский

Citations

0
Optimisation of synergistic utilization of glass and pumice powder in fiber-reinforced mortars: Balancing rheology, strength and durability DOI

Revan Alkhalafalallian,

Şevin Ekmen

Construction and Building Materials, Journal Year: 2025, Volume and Issue: 483, P. 141598 - 141598

Published: May 14, 2025

Language: Английский

Citations

0
The Properties of High-Performance Concrete with Manganese Slag under Salt Action DOI Open Access
Junchao Yang, Hui Wang, Ling Peng

et al.

Materials, Journal Year: 2024, Volume and Issue: 17(7), P. 1483 - 1483

Published: March 25, 2024

Manganese slag (MS) containing a certain amount of active hydration substances may be used as kind cementitious material. In the present study, we measured mass, relative dynamic modulus elasticity (RDME), and flexural compressive strengths MS high-performance concrete (MS-HPC) with added basalt fibers exposed to NaCl freeze-thaw cycles (N-FCs), dry-wet alternations (N-DAs), Na2SO4 (NS-DAs). Scanning electron microscope energy-dispersive spectrometer (SEM-EDS) spectra, thermogravimetric analysis (TG) curves, X-ray diffraction spectroscopy (XRD) curves were obtained. The mass ratio ranged from 0% 40%. volume varied 2%. We found that, result salt action, loss rate (MLR) exhibited linear functions which inversely correlated fibers. After MLR increased by rates 0~56.3%, but this increase was attenuated addition Corresponding increases in RDME function positively ratios range 0~55.1%. also led decreased attenuation mechanical strength, while levels flocculent products elements Mn, Mg, Fe. CaClOH CaSO4 crystals observed XRD after N-DA NS-DA actions, respectively. Finally, resulted variation TG values. However, opposite obtained when actions exerted.

Language: Английский

Citations

1